Описание
Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early.
A malicious code exercizing the UMTX_SHM_DESTROY sub-request in parallel can panic the kernel or enable further Use-After-Free attacks, potentially including code execution or Capsicum sandbox escape.
Уязвимые конфигурации
Одно из
EPSS
10 Critical
CVSS3
9.8 Critical
CVSS3
Дефекты
Связанные уязвимости
Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early. A malicious code exercizing the UMTX_SHM_DESTROY sub-request in parallel can panic the kernel or enable further Use-After-Free attacks, potentially including code execution or Capsicum sandbox escape.
Уязвимость системного вызова _umtx_op операционных систем FreeBSD, позволяющая нарушителю выполнить произвольный код
EPSS
10 Critical
CVSS3
9.8 Critical
CVSS3